21332103313 has 2 divisors, whose sum is σ = 21332103314. Its totient is φ = 21332103312.

The previous prime is 21332103281. The next prime is 21332103341. The reversal of 21332103313 is 31330123312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20190136464 + 1141966849 = 142092^2 + 33793^2 .

It is a cyclic number.

It is not a de Polignac number, because 21332103313 - 2⁵ = 21332103281 is a prime.

It is not a weakly prime, because it can be changed into another prime (21332103343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666051656 + 10666051657.

It is an arithmetic number, because the mean of its divisors is an integer number (10666051657).

Almost surely, 2^21332103313 is an apocalyptic number.

It is an amenable number.

21332103313 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332103313 is an equidigital number, since it uses as much as digits as its factorization.

21332103313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21332103313 its reverse (31330123312), we get a palindrome (52662226625).

The spelling of 21332103313 in words is "twenty-one billion, three hundred thirty-two million, one hundred three thousand, three hundred thirteen".